Mayr's Database of Reactivity Parameters

Nucleophiles

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Name Solvent Reactivity
Parameters
Classification Reference
(title or year)
[H-B(C6F5)3]- [NEt4]+
*
MeCN

N  Param.: 10.04

sN Param.: 0.73
*** Angew. Chem. Int. Ed. 2015, 54, 14508-14512
10.1002/anie.201507298
[H-B(2,6-F2C6H3)3]- [NEt4]+
*
MeCN

N  Param.: 13.97

sN Param.: 0.66
*** Angew. Chem. Int. Ed. 2015, 54, 14508-14512
10.1002/anie.201507298
[H-B(2,4,6-F3C6H2)3]- [NEt4]+
*
MeCN

N  Param.: 14.13

sN Param.: 0.61
*** Angew. Chem. Int. Ed. 2015, 54, 14508-14512
10.1002/anie.201507298
Z-3-(trimethylsiloxy)pent-2-ene
C8H18OSi *
dichloromethane

N  Param.: 5.58

sN Param.: 1.00
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
xanthene
C13H10O *
dichloromethane

N  Param.: 0.64

sN Param.: 0.97
* J. Am. Chem. Soc. 2002, 124, 4076-4083
10.1021/ja0121538
water (in MeCN)
*
MeCN

N  Param.: 5.79

sN Param.: 0.72
*** Bull. Chem. Soc. Jpn. 2018, 91, 523-530
10.1246/bcsj.20170360
valine (anionic, in water)
C5H10NO2 *
water

N  Param.: 13.65

sN Param.: 0.57
*** Org. Biomol. Chem. 2007, 5, 3814-3820
10.1039/b713778h
uracil anion (in water)
*
water

N  Param.: 10.75

sN Param.: 0.53
*** Chem. Eur. J. 2012, 18, 127-137
10.1002/chem.201102411
uracil anion (in DMSO)
*
DMSO

N  Param.: 17.04

sN Param.: 0.63
*** Chem. Eur. J. 2012, 18, 127-137
10.1002/chem.201102411
tris(4-methylphenyl)phosphane
C21H21P *
dichloromethane

N  Param.: 15.44

sN Param.: 0.64
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
tris(4-methoxyphenyl)phosphane
C21H21O3P *
dichloromethane

N  Param.: 16.17

sN Param.: 0.62
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
tris(4-methoxyphenyl)methane (in MeCN)
*
MeCN

N  Param.: -5.18

sN Param.: 0.82
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tris(4-dimethylaminophenyl)phosphane
C24H30N3P *
dichloromethane

N  Param.: 18.39

sN Param.: 0.64
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
tris(4-chlorophenyl)phosphane
C18H12Cl3P *
dichloromethane

N  Param.: 12.58

sN Param.: 0.65
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
tris(4-(dimethylamino)phenyl)methane (in MeCN)
C25H31N3 *
MeCN

N  Param.: -3.30

sN Param.: 0.82
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tris(2-methylphenyl)phosphane
C21H21P *
dichloromethane

N  Param.: 8.56

sN Param.: 0.70
- Chem. Eur. J. 2017, 23, 7422-7427
10.1002/chem.201701080
tris(2-methoxyphenyl)phosphane
C21H21O3P *
dichloromethane

N  Param.: 14.26

sN Param.: 0.73
- Chem. Eur. J. 2017, 23, 7422-7427
10.1002/chem.201701080
tris(2,6-dimethoxyphenyl)phosphane (in MeCN)
C24H27O6P *
MeCN

N  Param.: 18.11

sN Param.: 0.62
- Chem. Eur. J. 2017, 23, 7422-7427
10.1002/chem.201701080
tris(2,6-dimethoxyphenyl)phosphane
C24H27O6P *
dichloromethane

N  Param.: 15.19

sN Param.: 0.88
- Chem. Eur. J. 2017, 23, 7422-7427
10.1002/chem.201701080
tris(2,4-dimethylphenyl)phosphane
C24H27P *
dichloromethane

N  Param.: 14.88

sN Param.: 0.41
- Chem. Eur. J. 2017, 23, 7422-7427
10.1002/chem.201701080
tris((trimethylsilyl)methyl)silane
C12H34Si4 *
dichloromethane

N  Param.: 3.59

sN Param.: 0.67
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tris((dimethyl(phenyl)silyl)methyl)silane
C27H40Si4 *
dichloromethane

N  Param.: 3.40

sN Param.: 0.66
** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tris((butyldimethylsilyl)methyl)silane
C21H52Si4 *
dichloromethane

N  Param.: 3.73

sN Param.: 0.68
** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tripropylsilane
*
dichloromethane

N  Param.: 3.67

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
triphenylstannane
C18H16Sn *
dichloromethane

N  Param.: 5.64

sN Param.: 0.59
*** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
triphenylsilane
C18H16Si *
dichloromethane

N  Param.: 2.65

sN Param.: 0.72
*** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
triphenylphosphine (in THF)
*
THF

N  Param.: 13.59

sN Param.: 0.66
*** Angew. Chem. Int. Ed. 2011, 50, 6915-6919
10.1002/anie.201102435
triphenylphosphane
C18H15P *
dichloromethane

N  Param.: 14.33

sN Param.: 0.65
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
triphenylmethane
*
dichloromethane

N  Param.: -4.27

sN Param.: 0.80
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
triphenylgermane
C18H16Ge *
dichloromethane

N  Param.: 3.99

sN Param.: 0.62
*** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
triphenyl phosphite
C18H15O3P *
dichloromethane

N  Param.: 5.51

sN Param.: 0.76
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
trimethylsilane
C3H10Si *
dichloromethane

N  Param.: 3.15

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethylhydrazine (in MeCN)
*
MeCN

N  Param.: 17.75

sN Param.: 0.53
*** Angew. Chem. Int. Ed. 2012, 51, 1353-1356
10.1002/anie.201107315
trimethylhydrazine (in MeCN)
*
MeCN

N  Param.: 12.43

sN Param.: 0.75
*** Angew. Chem. Int. Ed. 2012, 51, 1353-1356
10.1002/anie.201107315
trimethylamine (in MeCN)
*
MeCN

N  Param.: 23.05

sN Param.: 0.45
*** J. Org. Chem. 2012, 77, 8142-8155
10.1021/jo301497g
trimethyl(prenyl)silane
C8H18Si *
dichloromethane

N  Param.: 0.90

sN Param.: 1.17
***** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
trimethyl(phenethyl)stannane
*
1,2-dichloroethane

N  Param.: -1.10

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethyl(phenethyl)silane
*
dichloromethane

N  Param.: -3.50

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethyl(4-methylphenethyl)stannane
*
1,2-dichloroethane

N  Param.: -0.50

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethyl(3-(trimethylstannyl)propyl)silane (in MeCN)
*
MeCN

N  Param.: -3.40

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethyl(3-(trimethylstannyl)propyl)germane (in MeCN)
*
MeCN

N  Param.: -2.40

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethyl(3-(trimethylplumbyl)propyl)silane (in MeCN)
*
MeCN

N  Param.: -1.20

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethyl(3-(trimethylplumbyl)propyl)germane (in MeCN)
*
MeCN

N  Param.: -1.00

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethyl(3-(trimethylgermyl)propyl)silane (in MeCN)
*
MeCN

N  Param.: -4.80

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trimethyl phosphite (in 91M9AN)
C3H9O3P *
MeOH-MeCN mix

N  Param.: 9.04

sN Param.: 0.70
*** Angew. Chem. Int. Ed. 2006, 45, 3869-3874
10.1002/anie.200600542
triisopropylsilane
*
dichloromethane

N  Param.: 2.93

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
triisopropylphosphane
C9H21P *
dichloromethane

N  Param.: 13.37

sN Param.: 0.70
* Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
trihexylsilane
*
dichloromethane

N  Param.: 3.89

sN Param.: 0.73
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trifluoroethanol
C2H3F3O *
TFE

N  Param.: 1.11

sN Param.: 0.96
*** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
trifluoroacetamide anion (in DMSO)
*
DMSO

N  Param.: 15.81

sN Param.: 0.64
*** J. Org. Chem. 2010, 75, 5250-5258
10.1021/jo1009883
triethylsilane
C6H16Si *
dichloromethane

N  Param.: 3.58

sN Param.: 0.70
*** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
triethylgermane
C6H16Ge *
dichloromethane

N  Param.: 4.00

sN Param.: 0.75
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
triethylamine (in MeCN)
*
MeCN

N  Param.: 17.10

sN Param.: 0.52
* J. Phys. Org. Chem. 2010, 23, 1029-1035
10.1002/poc.1707
triethylamine (in CH2Cl2)
*
dichloromethane

N  Param.: 17.30

sN Param.: 0.52
* J. Phys. Org. Chem. 2010, 23, 1029-1035
10.1002/poc.1707
triethoxysilane
C6H16O3Si *
dichloromethane

N  Param.: -1.80

sN Param.: 0.75
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tricyclohexylphosphane
C18H33P *
dichloromethane

N  Param.: 14.64

sN Param.: 0.68
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
tributylstannane
C12H28Sn *
dichloromethane

N  Param.: 9.96

sN Param.: 0.55
*** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
tributylsilane
C12H28Si *
dichloromethane

N  Param.: 3.99

sN Param.: 0.73
*** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tributylgermane
C12H28Ge *
dichloromethane

N  Param.: 5.92

sN Param.: 0.73
*** J. Am. Chem. Soc. 2001, 123, 9500-9512
10.1021/ja010890y
tributyl phosphite
C12H27O3P *
dichloromethane

N  Param.: 10.36

sN Param.: 0.70
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
tri-p-tolylmethane (in MeCN)
C22H22 *
MeCN

N  Param.: -8.80

sN Param.: 0.82
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tri-p-tolylmethane
*
dichloromethane

N  Param.: -3.62

sN Param.: 0.80
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tri-n-butylphosphane
C12H27P *
dichloromethane

N  Param.: 15.49

sN Param.: 0.69
*** Chem. Eur. J. 2005, 11, 917-927
10.1002/chem.200400696
trans-HMo(CO)2(PPh3)Cp
*
dichloromethane

N  Param.: 6.60

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trans-HMo(CO)2(PMe3)Cp
*
dichloromethane

N  Param.: 7.80

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
trans-HMo(CO)2(PCy3)Cp
*
dichloromethane

N  Param.: 6.50

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
toluene
C7H8 *
dichloromethane

N  Param.: -4.36

sN Param.: 1.77
***** J. Am. Chem. Soc. 2012, 134, 13902-13911
10.1021/ja306522b
thymine anion (in water)
*
water

N  Param.: 11.17

sN Param.: 0.51
*** Chem. Eur. J. 2012, 18, 127-137
10.1002/chem.201102411
thymine anion (in DMSO)
*
DMSO

N  Param.: 17.63

sN Param.: 0.62
*** Chem. Eur. J. 2012, 18, 127-137
10.1002/chem.201102411
THTP (3,5,6,7-tetrahydro-2H-thiazolo[3,2-a]pyrimidine)
*
dichloromethane

N  Param.: 14.45

sN Param.: 0.78
*** J. Org. Chem. 2011, 76, 5104-5112
10.1021/jo200803x
threonine (anionic, in water)
C4H8NO3 *
water

N  Param.: 12.69

sN Param.: 0.60
*** Org. Biomol. Chem. 2007, 5, 3814-3820
10.1039/b713778h
thiophenolate (in DMSO)
C6H5S- *
DMSO

N  Param.: 23.36

sN Param.: 0.74
*** J. Org. Chem. 2021, 86, 5965-5972
10.1021/acs.joc.1c00025
thiophene
C4H4S *
dichloromethane

N  Param.: -1.01

sN Param.: 1.10
* Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
thiocyanate (in MeCN)
CNS *
MeCN

N  Param.: 12.13

sN Param.: 0.60
* J. Am. Chem. Soc. 2003, 125, 14126-14132
10.1021/ja037317u
thiocyanate (in MeCN)
CNS *
MeCN

N  Param.: 17.94

sN Param.: 0.60
*** J. Am. Chem. Soc. 2003, 125, 14126-14132
10.1021/ja037317u
thioacetate (in MeCN)
*
MeCN

N  Param.: 21.20

sN Param.: 0.63
*** Org. Biomol. Chem. 2011, 9, 8046-8050
10.1039/c1ob06245j
theophylline anion (in water)
*
water

N  Param.: 10.06

sN Param.: 0.71
*** Chem. Eur. J. 2012, 18, 127-137
10.1002/chem.201102411
theophylline anion (in DMSO)
*
DMSO

N  Param.: 14.78

sN Param.: 0.71
*** Chem. Eur. J. 2012, 18, 127-137
10.1002/chem.201102411
tetrapropylstannane (in 1,2-DCE)
*
1,2-dichloroethane

N  Param.: -0.50

sN Param.: 1.13
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetramisole (TM) (in CH2Cl2)
C11H12N2S *
dichloromethane

N  Param.: 13.86

sN Param.: 0.68
*** Angew. Chem. Int. Ed. 2025, 64, e202514865
10.1002/anie.202514865
tetramethylethylene
C6H12 *
dichloromethane

N  Param.: -1.00

sN Param.: 1.40
*** Acc. Chem. Res. 2003, 36, 66-77
10.1021/ar020094c
tetrakis(5-methyl-furan-2-yl)borate
*
MeCN

N  Param.: 9.09

sN Param.: 1.12
*** Chem. Sci. 2012, 3, 878-882
10.1039/c2sc00883a
tetraisobutylstannane
*
dichloromethane

N  Param.: 1.35

sN Param.: 1.10
* Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetrahydrothiopyran (in CH2Cl2)
C5H10S *
dichloromethane

N  Param.: 11.94

sN Param.: 0.75
** Chem. Eur. J. 2021, 21, 11367-11376
10.1002/chem.202100977
tetrahydrothiophene (in MeCN)
C4H8S *
MeCN

N  Param.: 13.30

sN Param.: 0.72
- Chem. Eur. J. 2021, 21, 11367-11376
10.1002/chem.202100977
tetrahydrothiophene (in CH2Cl2)
C4H8S *
dichloromethane

N  Param.: 13.10

sN Param.: 0.72
- Chem. Eur. J. 2021, 21, 11367-11376
10.1002/chem.202100977
tetrahydrofuran (in dichloromethane)
C4H8O *
dichloromethane

N  Param.: -3.50

sN Param.: 0.80
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetrahydroborate ion (in water)
*
water

N  Param.: 12.10

sN Param.: 0.79
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetraethylstannane (in MeCN)
*
MeCN

N  Param.: -2.40

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetraethylstannane (in 1,2-DCE)
*
1,2-dichloroethane

N  Param.: -1.90

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetraethylsilane
*
MeCN

N  Param.: -6.50

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetraethylplumbane (in MeCN)
*
MeCN

N  Param.: 0.10

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetraethylgermane (in MeCN)
*
MeCN

N  Param.: -4.70

sN Param.: 1.10
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetrabutylstannane
*
dichloromethane

N  Param.: -0.30

sN Param.: 1.07
*** Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tetra-sec.butylstannane (in 1,2-DCE)
*
1,2-dichloroethane

N  Param.: -1.10

sN Param.: 1.15
- Chem. Eur. J. 2013, 19, 249-263
10.1002/chem.201202839
tert-butylamine (in water)
C4H11N *
water

N  Param.: 10.48

sN Param.: 0.65
*** J. Org. Chem. 2007, 72, 3679-3688
10.1021/jo062586z
tert-butylamine (in MeCN)
*
MeCN

N  Param.: 12.35

sN Param.: 0.72
*** Eur. J. Org. Chem. 2009, , 6379-6385
10.1002/ejoc.200900925
tert-butyl isocyanide
C5H9N *
dichloromethane

N  Param.: 5.47

sN Param.: 0.77
*** Angew. Chem. Int. Ed. 2007, 46, 3563-3566
10.1002/anie.200605205
tert-butyl indole-1-carboxylate
C13H15NO2 *
MeCN

N  Param.: 1.68

sN Param.: 1.26
*** J. Am. Chem. Soc. 2013, 135, 6317-6324
10.1021/ja4017655
tert-butyl hydrazinecarboxylate (in MeCN)
*
MeCN

N  Param.: 11.40

sN Param.: 0.70
*** J. Org. Chem. 2012, 77, 8142-8155
10.1021/jo301497g